Dyfyniad APA

Makridakis, S., & Wheelwright, S. C. H. (2003). Forecasting: Methods and applications (3rd ed.). John Wiley.

Dyfyniad Arddull Chicago

Makridakis, Spyros, and Steven C Hyndman Wheelwright. Forecasting: Methods and Applications. 3rd ed. New York: John Wiley, 2003.

Dyfyniad MLA

Makridakis, Spyros, and Steven C Hyndman Wheelwright. Forecasting: Methods and Applications. 3rd ed. John Wiley, 2003.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.